STRUCTURAL AND RAMAN SPECTRA STUDIES OF SUPPORTEDLiFCLUSTERS

Fengqi Liu, Min Han, Yingchun Gong, Jijun Zhao, Xiaoshuang Chen, Qun Wang and Guanghou Wang
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Fengqi Liu: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Min Han: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Yingchun Gong: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Jijun Zhao: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Xiaoshuang Chen: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Qun Wang: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Guanghou Wang: Department of Physics and National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 157-160

Abstract: Electron microscope and Raman scattering spectra are used to study the structures and properties of supportedLiFclusters prepared by gas-evaporation technique. The experiments demonstrate that large-sizeLiFclusters have fcc structure and cubic shape, but have no Raman scattering spectrum. As cluster size decreases, cluster shape deviates from cube and tends to be spherical, fractal structure appears and the size distribution becomes narrow. When clusters size is 10 nm, very conspicuous Raman spectrum is obtained. If clusters size decreases to 5 nm, the fine structure of Raman spectrum is observed. Fine structure in small cluster reflects the dicreteness of the wave vector and the intensity of cluster-substrate interaction.

Date: 1996
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DOI: 10.1142/S0218625X96000310

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